{"url_path":"/weather/alerts/2.49.0.1.840.0.0fb710fa4bc3e91e6fd3dbbfce537086a2e911a9.001.2","section_key":"alert","section_title":"Heat Advisory issued July 21 at 12:32PM CDT until July 21 at 7:00PM CDT by NWS New Orleans LA","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-21","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0fb710fa4bc3e91e6fd3dbbfce537086a2e911a9.001.2","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS New Orleans LA"},"word_count":261,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued July 21 at 12:32PM CDT until July 21 at 7:00PM CDT by NWS New Orleans LA\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Pointe Coupee; West Feliciana; East Feliciana; St. Helena; Washington; Iberville; West Baton Rouge; East Baton Rouge; Assumption; St. James; St. John The Baptist; Upper St. Bernard; Lower St. Bernard; Northern Tangipahoa; Southeast St. Tammany; Western Orleans; Eastern Orleans; Northern St. Tammany; Southwestern St. Tammany; Central Tangipahoa; Lower Tangipahoa; Northern Livingston; Southern Livingston; Western Ascension; Eastern Ascension; Upper Jefferson; Upper Plaquemines; Central Plaquemines; Lower Plaquemines; Central Jefferson; Coastal Jefferson; Upper Lafourche; Lower Lafourche; Upper Terrebonne; Lower Terrebonne; Upper St. Charles; Central St. Charles; Lower St. Charles; Wilkinson; Amite; Pike; Walthall; Pearl River\n**Issued by:** NWS New Orleans LA\n**Sent:** 2026-07-21T12:32:00-05:00\n**Effective:** 2026-07-21T12:32:00-05:00\n**Expires:** 2026-07-22T02:45:00-05:00\n\n## Description\n* WHAT...For the Heat Advisory, heat index values up to 113. For the\nExtreme Heat Warning, dangerously hot conditions with heat index\nvalues up to 115 expected.\n\n* WHERE...Portions of southeast Louisiana and southern Mississippi.\n\n* WHEN...For the Heat Advisory, until 7 PM CDT this evening. For the\nExtreme Heat Warning, from 10 AM to 8 PM CDT Wednesday.\n\n* IMPACTS...Heat related illnesses increase significantly during\nextreme heat and high humidity events. Hot temperatures and high\nhumidity may cause heat illnesses.\n\n## Instructions\nDrink plenty of fluids, stay in an air-conditioned room, stay out of\nthe sun, and check up on relatives and neighbors.\n\nTake extra precautions when outside. Wear lightweight and loose\nfitting clothing. Try to limit strenuous activities to early morning\nor evening. Take action when you see symptoms of heat exhaustion and\nheat stroke."}